Dragino LDDS45 User manual

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LDDS45 LoRaWAN Distance Detection Sensor User Manual 1/ 31
LoRaWAN Distance Detection Sensor User Manual
Document Version: 1.0
Image Version: v1.1.4
Version
Description
Date
1.0
Release
2021-Aug-11

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1. Introduction 4
1.1 What is LoRaWAN Distance Detection Sensor 4
1.2 Features 5
1.3 Specification 5
1.3.1 Rated environmental conditions 5
1.3.2 Effective measurement range Reference beam pattern 6
1.4 Applications 6
1.5 Pin mapping and power on 7
2. Configure LDDS45 to connect to LoRaWAN network 8
2.1 How it works 8
2.2 Quick guide to connect to LoRaWAN server (OTAA) 9
2.3 Uplink Payload 15
2.3.1 Battery Info 15
2.3.2 Distance 15
2.3.3 Interrupt Pin 15
2.3.4 DS18B20 Temperature sensor 16
2.3.5 Sensor Flag 16
2.3.6 Decode payload in The Things Network 16
2.4 Uplink Interval 16
2.5 Show Data in Datacake IoT Server 17
2.6 Frequency Plans 20
2.6.1 EU863-870 (EU868) 20
2.6.2 US902-928(US915) 20
2.6.3 CN470-510 (CN470) 20
2.6.4 AU915-928(AU915) 21
2.6.5 AS920-923 & AS923-925 (AS923) 21
2.6.6 KR920-923 (KR920) 22
2.6.7 IN865-867 (IN865) 22
2.7 LED Indicator 22
2.8 Firmware Change Log 23
2.9 Mechanical 23
3. Battery & how to replace 23
3.1 Battery Type 23
3.2 Replace Battery 24
3.3 Power Consumption Analyze 24
3.3.1 Battery Note 25
3.3.2 Replace the battery 25
3. 26
4. Configure LDDS45 via AT Command or LoRaWAN Downlink 26
4.1 Access AT Commands 26
4.2 Set Transmit Interval Time 27
4.3 Set Interrupt Mode 29
5. FAQ 30
5.1 What is the frequency plan for LDDS45? 30
5.2 How to change the LoRa Frequency Bands/Region? 30
6. Trouble Shooting 30

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6.1 AT Command input doesn’t work 30
7. Order Info 31
8. Packing Info 31
9. Support 31

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1. Introduction
1.1 What is LoRaWAN Distance Detection Sensor
The Dragino LDDS45 is a LoRaWAN Distance Detection Sensor for Internet of Things solution.
It is used to measure the distance between the sensor and a flat object. The distance
detection sensor is a module that uses ultrasonic sensing technology for distance
measurement, and temperature compensation is performed internally to improve the
reliability of data. The LDDS45 can be applied to scenarios such as horizontal distance
measurement, liquid level measurement, parking management system, object proximity and
presence detection, intelligent trash can management system, robot obstacle avoidance,
automatic control, sewer, bottom water level monitoring, etc.
It detects the distance between the measured object and the sensor, and uploads the value
via wireless to LoRaWAN IoT Server.
The LoRa wireless technology used in LDDS45 allows device to send data and reach
extremely long ranges at low data-rates. It provides ultra-long range spread spectrum
communication and high interference immunity whilst minimizing current consumption.
LDDS45 is powered by 8500mAh Li-SOCI2 battery; It is designed for long term use up to 10
years*.
Each LDDS45 pre-loads with a set of unique keys for LoRaWAN registrations, register these
keys to local LoRaWAN server and it will auto connect if there is network coverage, after
power on.
*Actually lifetime depends on network coverage and uplink interval and other factors

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1.2 Features
LoRaWAN 1.0.3 Class A
Ultra-low power consumption
Distance Detection by Ultrasonic technology
Flat object range 30mm - 4500mm
Accuracy: ±(1cm+S*0.3%) (S: Distance)
Measure Angle: 60°
Cable Length : 25cm
Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
AT Commands to change parameters
Uplink on periodically
Downlink to change configure
IP66 Waterproof Enclosure
8500mAh Battery for long term use
1.3 Specification
1.3.1 Rated environmental conditions
Item
Minimum value
Typical value
Maximum value
Unit
Remarks
Storage
temperature
-25
25
80
℃
Storage
humidity
65%
90%
RH
(1)
Operating
temperature
-15
25
60
℃
Working
humidity
65%
80%
RH
(1)
Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90%
(non-condensing)
b. When the ambient temperature is 40-50 ℃, the highest humidity is the
highest humidity in the natural world at the current temperature (no
condensation)

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1.3.2 Effective measurement range Reference beam pattern
(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a
diameter of 7.5cm.
(2) The object to be tested is a "corrugated cardboard box" perpendicular to the central axis
of 0 °, and the length * width is 60cm * 50cm.
1.4 Applications
Horizontal distance measurement
Liquid level measurement
Parking management system
Object proximity and presence detection
Intelligent trash can management system
Robot obstacle avoidance
Automatic control
Sewer
Bottom water level monitoring

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1.5 Pin mapping and power on

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2. Configure LDDS45 to connect to LoRaWAN network
2.1 How it works
The LDDS45 is configured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to
join LoRaWAN network. To connect a LoRaWAN network, you need to input the OTAA keys
in the LoRaWAN IoT server and power on the LDDS45. If there is coverage of the LoRaWAN
network, it will automatically join the network via OTAA and start to send the sensor value
In case you can’t set the OTAA keys in the LoRaWAN OTAA server, and you have to use the
keys from the server, you can use AT Commands to set the keys in the LDDS45.

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2.2 Quick guide to connect to LoRaWAN server (OTAA)
Following is an example for how to join the TTN V3 LoRaWAN Network. Below is the
network structure; we use the LG308 as a LoRaWAN gateway in this example.
The LG308 is already set to connected to TTN V3 network , so what we need to now is
configure the TTN V3 server.
Step 1: Create a device in TTN V3 with the OTAA keys from LDDS45.
Each LDDS45 is shipped with a sticker with the default device keys, user can find this sticker
in the box. it looks like below.
For OTAA registration, we need to set APP EUI/ APP KEY/ DEV EUI. Some server might no
need to set APP EUI.
Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
Add APP EUI in the application

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